1,720,959 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Audiogenic seizures, a gateway into understanding the mechanisms of development and functioning of retro-cochlear pathways
No full textL’approche génétique des formes héréditaires de surdité a été efficace pour révéler la physiologie moléculaire de la cochlée. En revanche, elle a fourni jusqu’à présent peu d'informations sur le système auditif central. L’hypothèse de mon laboratoire est qu’une partie des atteintes auditives centrales dans les formes génétiques de surdité seraient passées inaperçues en raison de l’atteinte cochléaire, qui prive le cerveau auditif de tout ou partie des informations acoustiques qu’il reçoit normalement. Mon objectif est de caractériser ces déficits centraux et périphériques masqués dans plusieurs formes génétiques de surdité par la caractérisation du rôle cérébral d’un gène pour lequel des mutations entraînent une surdité périphérique et une susceptibilité aux crises audiogènes chez la souris. Dans la cochlée, Otogéline-like (Otogl) est impliquée dans la cohésion de la touffe ciliaire et dans la membrane tectoriale. Mes résultats ont montré une expression d’Otogl dans les fibres auditives du noyau cochléaire et dans d’autres structures de la cochlée, révélant de nouveaux rôles joués par Otogl dans la cochlée et les voies rétro-cochléaires. Des défauts fonctionnels dans le traitement du son ont été également observés chez les souris hétérozygotes qui n’ont pas de défauts d’audition. Otogl a donc un rôle dans les voies rétrocochléaires en plus de son rôle cochléaire. Mes résultats montrent qu’Otogl est essentiel au fonctionnement de fibres auditives particulières, dites à haut seuil. Les souris mutantes Otogl sont un nouveau modèle d’étude de ces fibres et de leur rôle dans la survenue des crises audiogènes chez la souris.The genetic approach of inherited forms of deafness has been particularly effective for deciphering the molecular physiology of the cochlea. In contrast, this genetic dissection has so far provided little information about the central auditory system. The hypothesis of my laboratory is that part of the central hearing defects in genetic forms of deafness would be concealed due to cochlear damages, which deprive the auditory brain of all or part of the acoustic information it receives. The objective of my thesis was to characterize these masked central and peripheric deficits in a new mutant mouse model for Otogl, a genetic form of deafness. Mutations in Otogl cause peripheral deafness but are also associated to a susceptibility to audiogenic seizures, reflex seizures induced by a loud sound. In the cochlea, otogl is involved in the cohesion of the hair bundle, the mechanical antenna to the sound of sensory cells and in the tectorial membrane. My results showed that Otogl is expressed in the fibers of the primary auditory nerve and in additional structures of the cochlea, unveiling new roles for Otogl in the cochlea and the central auditory pathways. I also uncovered functional deficits in sound processing in heterozygous Otogl+/- mice that did not have peripheral hearing loss. Otogl therefore has a retrocochlear role in addition to its role in the cochlea. These results involve a particular category of auditory nerve fibers, the high-threshold fibers. Otogl mutant mice are a new model for studying high-threshold fibers and their role in the occurrence of audiogenic seizures in mice
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Les crises audiogènes réflexes : une voie d’entrée dans la compréhension des mécanismes de développement et de fonctionnement des voies rétro-cochléaires
No full textThe genetic approach of inherited forms of deafness has been particularly effective for deciphering the molecular physiology of the cochlea. In contrast, this genetic dissection has so far provided little information about the central auditory system. The hypothesis of my laboratory is that part of the central hearing defects in genetic forms of deafness would be concealed due to cochlear damages, which deprive the auditory brain of all or part of the acoustic information it receives. The objective of my thesis was to characterize these masked central and peripheric deficits in a new mutant mouse model for Otogl, a genetic form of deafness. Mutations in Otogl cause peripheral deafness but are also associated to a susceptibility to audiogenic seizures, reflex seizures induced by a loud sound. In the cochlea, otogl is involved in the cohesion of the hair bundle, the mechanical antenna to the sound of sensory cells and in the tectorial membrane. My results showed that Otogl is expressed in the fibers of the primary auditory nerve and in additional structures of the cochlea, unveiling new roles for Otogl in the cochlea and the central auditory pathways. I also uncovered functional deficits in sound processing in heterozygous Otogl+/- mice that did not have peripheral hearing loss. Otogl therefore has a retrocochlear role in addition to its role in the cochlea. These results involve a particular category of auditory nerve fibers, the high-threshold fibers. Otogl mutant mice are a new model for studying high-threshold fibers and their role in the occurrence of audiogenic seizures in mice.L’approche génétique des formes héréditaires de surdité a été efficace pour révéler la physiologie moléculaire de la cochlée. En revanche, elle a fourni jusqu’à présent peu d'informations sur le système auditif central. L’hypothèse de mon laboratoire est qu’une partie des atteintes auditives centrales dans les formes génétiques de surdité seraient passées inaperçues en raison de l’atteinte cochléaire, qui prive le cerveau auditif de tout ou partie des informations acoustiques qu’il reçoit normalement. Mon objectif est de caractériser ces déficits centraux et périphériques masqués dans plusieurs formes génétiques de surdité par la caractérisation du rôle cérébral d’un gène pour lequel des mutations entraînent une surdité périphérique et une susceptibilité aux crises audiogènes chez la souris. Dans la cochlée, Otogéline-like (Otogl) est impliquée dans la cohésion de la touffe ciliaire et dans la membrane tectoriale. Mes résultats ont montré une expression d’Otogl dans les fibres auditives du noyau cochléaire et dans d’autres structures de la cochlée, révélant de nouveaux rôles joués par Otogl dans la cochlée et les voies rétro-cochléaires. Des défauts fonctionnels dans le traitement du son ont été également observés chez les souris hétérozygotes qui n’ont pas de défauts d’audition. Otogl a donc un rôle dans les voies rétrocochléaires en plus de son rôle cochléaire. Mes résultats montrent qu’Otogl est essentiel au fonctionnement de fibres auditives particulières, dites à haut seuil. Les souris mutantes Otogl sont un nouveau modèle d’étude de ces fibres et de leur rôle dans la survenue des crises audiogènes chez la souris
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